all the students have covered 5 kilometers and no one quit on the half way.A. To our ang

问题补充：

,all the students have covered 5 kilometers and no one quit on the half way.

A. To our anger

B. To our sorrow

C. To our joy

D. To our disappointment

答案：

A. To our anger

B. To our sorrow

(答案→)C. To our joy

D. To our disappointment

解析：句意，令我们高兴的是，所有的学生都行进了5公里，没有人半途而废。根据题意分析没有人半途而废，应该是令人高兴的事to one’s anger令人生气的是 to one’s sorrow令人伤心的是to one’s joy 令人高兴的是to one’s disappointment令人失望的是。所以选C.